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3 Sheets-Sheet 1.

(No Model.)

H E SMYSER GLUING MBGHANISNLY FIG. I

INVENTOR:

Patented May 12, 1896.

WITNESSES:

J By 322's Allorneys, W .amm (@1 AN DREW RGRMHM. WUTOUTNQWASHINGTUN. D C

(No Model.) 3 Sheets-Sheet 2. H E SMYSER GLUING MECHANISM.

Patented May 12, 1896.

0 FIG. 8.

FIG. 7.

FIG. 6.

IN VENTOR: Q 1 2% By his Aliomeys, m.@hwom ((9 W12: ESSES: W4?

(No Model.) 3 Sheets-Sheet 3.

H.E.SMYSER.

GLUING MECHANISM. No. 560,009. Patented May 12, 1896.

FIG. 9. 4 FIG. 10. 1-76.11

FIG. 12.

WITNESSES: INVENTQR;

By his Alzawzeys,

AKMKW ANDREW BYGRAHAM PHOTO'IJTHQWASKINGIDN. DYC

llrrrrn STATES ATENT Fries.

HENRY E. SMYSER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO ARBUCKLEBROTHERS, OF NElY YORK, N. Y.

GLUING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 560,009, dated May 12,1896.

Application filed February 1, 1895. Renewed Se t b 25, 1895. Serial No.563,665. No model.)

To all whom it 77mg concern.-

Beitknown that I, HENRY E. SMYSER, a citizen of the United States,residing in Philadelphia, Germantown in the city and county ofPhiladelphia, and State of Pennsylvania, have invented certain new anduseful Improvements in Gluing Mechanisms, of which the following is aspecification.

This invention relates to mechanisms for applying adhesive substances inthe nature of glue, mucilage, or the like to paper or other materials.It is particularly designed for use with adhesive substances having ahigh degree of viscosity, and which consequently occasion difficulty byreason of their tendency to draw into threads or filaments whichobstruct and impede the proper operation of the mechanism. Forconvenience I shall refer to the adhesive substances of thischaractersuch as glue, mucilage, and the likeas glue, and I will referto the mechanism for applying such adhesive material as a gluingmechanism. Although applicable to a great variety of machines whereverit is required to apply such adhesive material to sheets, plates, orboards, the improved mechanism provided by my invention is especiallydesigned and adapted for use in machines for making paper boxes, bags,envelops, or the like.

My invention is based upon a discovery which I have made whereby thethread-drawing of glue or viscid gum may be prevented. I have found thatin applying a viscid glue of the character describedsuch,for example, asa strong solution of fish-gluefrom one part coated therewith to anotherpart or surface, if the two parts are separated rapidly after suchapplication, the glue is drawn or spun out into threads or stringsbetween the relatively-receding surfaces; but if, on the contrary, thetwo parts are relativelyseparated to only a slight extentsay, forexample, about one-quarter of an inch-and are then held stationary ornearly so for a short time the two masses of glue adhering to therespective surfaces will by their cohesive attraction draw toward themthe portion of glue'which at first is extended between them, therebysevering this intervening portion or string and leaving the two smallmasses of glue wholly segregated, after which the respective surfacesmay be moved apart at any desired speed without liability of anythread-drawing or stringing of the glue. Applying this prilr ciple to agluing mechanism, I construct the cam mechanism or other drivingmechanism for moving the glue-applying part relatively to theglue-receiving part in such manner that after having brought these partstogether to apply the glue from the one to the other it shall causetheir separation and shall then pause, holding them stationary or nearlyso relatively to one another for a sufficient time to enable theintervening glue to draw apart or separate into two distinct masses,after which the retraction of the one part from the other is completed.

Having thus explained the general principle of my invention, I willproceed to illustrate one suitable application thereof with reference tothe accompanying drawings, where- 1n Figure 1 is a sectional elevationof a gluing mechanism. Fig. 1 is a similar elevation showing a partwhich is concealed in Fig. 1. Fig. 2 is a sectional elevation of thelower part of the mechanism shown in Fig. 1., looking from the left inthat figure. Fig. 3 is a plan of the lower part of the mechanism inhorizontal section on the line 3 3 in Fig. 1. Figs. 4: and 5 aresectional elevations corresponding to the lower part of Fig. 1, butshowing the parts in different relative positions. Figs. 6, '7, and 8are fragmentary views showing the glue plunger and dabber (orglue-applying and glue-receiving parts) in three successive positions.Figs. 9, 10, and 11 are similar fragmentary views showing the dabber andsheet or plate of paper or the like material (being the glue-applyingand glue-receiving parts) in three successive positions. Fig. 12 isavertical section showing a modified construction.

Referring to the drawings, let A designate a glue-box or any suitablereceptacle for holding the glue. If desired, it may have a steamjacketa, by which to heat or warm the glue. A plunger l3 moves up and down,alternately plunging into the mass of glue and rising above the same.This plunger is mounted on a vertical slide 0, which in the constructionshown is moved by a cam D, Fig. 1, having a cam-groove which acts upon aroller 0 on a lever E, which is pivoted on a shaft d and connected by alink a to the slide 0. The plunger B is constructed with projections 117), preferably adjustable, which serve for applying the glue to a dabberF, which in the construction shown consists of two arms projecting froma shaft f, their ends coming over the projections b b, respectively, andthe arms being movable by the oscillation of the shaft f from theglue-receiving position shown in Fig. 1 to the glue-delivering positionshown in Fig. 4, in which latter position they apply the glue to thesheet of paper or other material G, the latter being supported againstthe pressure of the dabber bya platen or reinforce g, which may be fixedor movable, provided it be stationary or approximately so at the instantwhen it is required to support the paper. For imparting the requisiteoscillations to the shaft f for swinging the dabber-arms F it isprovided in the construction shown with a pinion 7t, engaged by asliding rack II, which is operated by a cam I, Fig. 1, having acamgroove which engages a roller 'i on a lever J, which is fulcrumed onthe shaft (Z and which connects at its free end, through the medium ofalinkj, with the slide H, as shown in Figs. 1 and I.

So far as described there is no special novelty in this mechanism. Inoperation, the plunger B first descends into the mass of glue, as shownin Fig. 4, then ascends to the position shown in Fig. 5, where itpresses the ends of its pins Z) Z) against the dabber-arms F, therebytransferring a part of the glue to the latter, after which the plungeragain descends, and after the plunger has descended far enough to be outof the path of the dabber-arms the latter are swung around-to theposition shown in Fig. at, where they press upwardly against the paper Gto transfer the glue to the latter. In this particular instance only twodots of glue are applied to the paper;

but the shape of the glue-applyin g surfaces that is, of the projectionsZ) on the plungerand of the glue receiving and delivering surfaces onthe dabber will of course be varied according to the amount of surfacethat is required to be covered with glue on the paper or other materialto which the glue is to be applied. The dabber after applying the glueto the paper swings back to the position shown in Fig. 5, and theplunger reascends and again applies glue to the dabber. In the use ofgluing mechanisms of this character for applying fish-glue or any viscidgum great difficulty has been experienced by reason of the drawing ofthe glue into threads or filaments between the glue-applying andgluereceiving surfaces during the time that they are reciprocallyreceding. Thus the plunger after applying glue to the dabber and whilemoving away from the latter is liable to draw a thread of glue betweenthem, and by the rapid attenuation of this thread it becomes dried inthe air sufficiently to give it considerable strength. During theforward swinging movement of the dabber one end of this thread iscarried forward with it, and during the successive movements thesuccessive threads thus formed constitute in time such a mass or tangleof accumulatedfilaments as to seriously obstruct the operation of themachine. Threads are also liable to be formed during the separation ofthe dabber from the paper, so that the paper while being fed on over thesuccessive portions of the machine (in an envelop or bag machine, forexample) carries these adhesive threads with it an d applies them to thesubsequent mechanisms, whiclibecome gummcd and obstructed by the threadsand rendered adhesive, so that they cling to and soil or perhaps tearthe paper. These difficulties have proven so serious that the employmentof glue or viscid gum has been largely abandoned in favor of paste andother adhesive substances which have not this tendency to draw intothreads, notwithstanding the superior advantages which in other respectsare inherent in glue or such other strong viscid cement. I havesucceeded in entirely overcoming this difficulty by the simple expedientof causing the glue applying and receiving surfaces as they mutuallyrecede to pause when only slightly separated and remain relativelystationary for an instant to afford sufficient time for the cohesiveattraction of the glue to draw the masses thereof 011 the two surfacesapart and thereby sever the incipient string or thread connecting them.This action, which constitutes the gist of my invention, is best shownin Figs. 6, 7, and S. In Fig. (3 the plunger 13 has ascended coveredwith glue, which is dripping off from it at y underneath, and hasbrought this glue into contact with the glue-receiving surfaces of thedabber F, the two being pressed sufficiently together to insure theadhesion of the glue to the dabber. The respective parts are thenseparated to approximately the extent indicated in Fig. '7, which may bedone by moving the plunger downward or the dabber upward, or by bothmovements simultaneously. After reaching this extent of separation theirrelative movement ceases and the parts rest in this position, remainingimmovable, or nearly so, with reference to one another for a sufficienttime to cause the glue to part, as indicated in Fig.. 8. In Fig. 7 isclearly shown the incipient string or thread m of glue uniting the uppermass 1) to the lower mass q. By the mere pause or dwell of the parts inthis position the cohesive attraction of the glue in connection with itsadhesion to the respective surfaces is made effective to sever theintervening string on, the upper mass 1) drawing upwardly and the lowermass q downwardly until the two are separated; \Vhen this separation hasoccurred, as shown in Fig. 8, the two parts, being entirelydisconnected, may now be moved apart at any suitable speed withoutdanger of thread-drawing. If, however, they had IIO been drawn apartimmediately without introducing the pause which I have described, theincipient string m (shown in Fig. '7) would in many instances not havebeen severed, but would have been drawn or spun out into a fine tenuousthread or filament, acquiring increased tensile strength as it is drawnout by reason of its drying in the air, and this adhesive thread orfilament would give rise to the difficulties above explained.

In carrying out my invention in connection with the mechanism shown I soshape the camgrooves in the cams D and I (either or both) that theglueapplying and glue-receiving parts, instead of moving apartimmediatelyby one movement, as heretofore, are moved apart but a shortdistance, are caused to dwell or remain stationary relatively to oneanother, and are then again moved apart to complete their mutualrecession. This result maybe effected by moving either part alonerelatively to the other, the other part remaining stationary, or byimparting simultaneous motion to both parts, as desired. In theparticular construction shown the dabber F remains stationary while theplunger 13 applies glue to it, then moves slightly away from it, pausesfor an instant, both parts remaining stationary, and the plunger thenresumes its descent, after which when the plunger has moved well out ofthe way the dabber commences its movement and swings forward to applythe glue to the paper. The pause referred to is caused by the dwell orconcentric portion "1' of the cam D, Fig. 1. lVhile my invention is notlimited to any exact proportions, yet for the guidance of those skilledin the art I will state that I have attained the most successful resultsby causing the glue-applying surface to recede about one-quarter inchfrom the glue-receiving surface, and then to pause for a durationequivalent to about one-sixth of the rotation of the actuating cam, thespeed of the latter being approximately twenty-one revolutions perminute, the glue in this instance being a viscid solution of fishglue.

In the applying of the glue from the dabber to the paper there is lessliability of thread-drawing; but with some kinds of glue as, forexample, certain highly-viscid solutions of glue-some difliculty islikely to be experienced from this cause. In such cases I apply the sameprinciple to the operation of the dabber, as shown in Figs. 9, l0, and11. Fig. 9 shows the dabber in the act of pressing the glue against thepaper. From this position the dabber is moved slightly away from thepaper until approximately the position shown in Fig. 10 is reached,where it pauses long enough for the cohesion of the glue to break theintervening string. Fig. 11 shows the condition after this string hasbeen broken. After this occurrence the retreating movement of the dabbermay be resumed. It will be understood that instead of the paperremaining motionless and the intermittent motion being communicated tothe dab her the dabber after applying glue to the paper may remainstationary and the paper be moved away from the dabber to the extentshown in Figs. 10 and 11, after which at any convenient time the returnmovement of the dabber may be effected.

Fig. 12 shows a modified embodiment of myinvention, A being theglue-vessel or gluebox; B, the plunger or glue-applying part; G, thepaper, and g a movable platen carrying the paper. The plunger B iscarried on an arm 7; from an oscillating shaft Z, oscillated bysuitablecam mechanism. On rising out of the bath of glue the glue-plunger pausesin the position shown at B to let the excess of glue drain or drip back.It then rises to the position B for applying the glue to the paper. Theplaten g moves from the position shown at 9 where the paper is laid on,to the posi tion shown at g, where the paper comes in contact with theglue-plunger, receiving glue therefrom. The platen then moves away fromthe stationary plunger to the position shown at 9 where it pauses for asufficient length of time to permit the glue to part and break thestring. After this occurs the glueplunger moves back into the bath ofglue and the platen returns to its position 9 It may be observed that inthis modification the glueplunger B applies the glue directly to thepaper, thereby combining the functions of the plunger 13 and dabber F inthe previouslydescribed construction.

My invention may be variously otherwise modified, provided the essentialprinciple which I have explained is preserved. It will be understoodthat during what I have called the pause to permit the cohesiveattraction of the glue to break the string or incipient thread the partsneed not be absolutely station ary, but only require to be stationaryrelatively to each other, as in fact both may be moving with relation toother parts. It is also admissible that instead of being absolutelystationary with relation to each other they may, during what I havecalled the pause, be moving very slowly, provided their motion be soslow as to permit of the described parting action of the glue.

I claim as my invention the following-defined novel features,substantially as hereinbefore specified, namely:

1. In a gluing mechanism, the combination with a part for applying glueto another part, of driving mechanism adapted to bring them intocontact, then to separate them slightly and pause sufficiently to permitthe glue to draw apart, and then to retract the one part from the other,whereby the thread-drawing of the glue during such retraction isprevented.

2. In a gluing mechanism, the combination with a plunger movable toalternately descend into the bath of glue and ascend therefrom, and apart to which it applies glue, of driving mechanism adapted to move saidplunger to slightly and pause long enough to permit the glue to drawapart, and then to retract the plunger, whereby the thread-drawing ofthe glue during such retraction is prevented.

4. In a gluing mechanism, the combination with a platen or support forthe paper or other sheet or plate to be glued, of adabber for carryingglue to said paper, and a driving mechanism for moving it relatively tosaid platen to first bring it into contact with the paper, then toseparate them slightly and pause sufiiciently to permit the glue to drawapart, and then to retract the dabber,whereby the threaddrawing of theglue between the dabber and paper is prevented.

In witness whereof I have hereunto signed my name in the presence of twosubscribing witnesses.

HENRY E. SMYSER.

\Vitnesses:

JAMES J. FRosT, XV. F. HIRSRE\VHITTREE.

